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Topic: Wind vane

	wind. The Columbia Encyclopedia, Sixth Edition. 2001-05
		The direction of wind is usually indicated by a thin strip of wood, metal, or plastic (often in the shape of an arrow or a rooster) called a weather vane or weathercock (but more appropriately called a wind vane) that is free to rotate in a horizontal plane.
		Winds may also be classified according to their origin and movement, such as heliotropic winds, which include land and sea breezes, and cyclonic winds, which blow counterclockwise in low-pressure regions of the Northern Hemisphere and clockwise in the Southern Hemisphere.
		This zonal pattern of winds is displaced northward and southward seasonally because of the inclination of the earth on its axis and the consequent migration of the belts of temperature and pressure.
	www.bartleby.com /65/wi/wind.html (872 words)

	Wind Vane - Barharborweathervanes.com
		Wind vane is a tool which is used to envisage the direction of wind.
		A wind vane is a vertical plate which is mounted on a vertical pivot or axle.
		Wind vane must be mounted at least twice the height of nearest obstacle like another building, tree, and any other object so that they can not interfere the true wind direction.
	www.barharborweathervanes.com /wind_vane.htm (279 words)

	[No title]
		Wind vane Wind vane using the force on the rotor Set a sensor (wind vane in the case of a cup type) vertically at the centre of the horizontally placed wind direction inspection board specified in 8.5.3.
		Wind tunnel The wind tunnel utilized for inspection of wind vane/anemometer shall generate sufficiently regulated airflow, enable various inspections to be conducted without affecting the sensor of the wind vane/anemometer, remain traceable to national standards, and shall be appropriately maintained.
		For a wind direction inspection board used to inspect a wind vane using the force on the rotor, the rotation axis of the wind vane shall be fixed vertically to the centre.
	www.sname.org /committees/technical/standards/ISONWIPWindVanes.doc (2346 words)

	Auxiliary Rudder — Hydrovane Wind Vane Steering
		Ensure that the VANE LOCK pin is fully inserted with the vane axis horizontal and remove the RUDDER LOCK pin from its sleeve in the Drive Unit frame.
		The small hole in the vane axis washer and the larger hole in the vane axis disc are both fitted over this stud.Replace the plastic tilt bolt washer, the stainless washer and the two locking nuts on the axis bolt.
		With the vane locking pin and the shaft locking pin inserted, check that the ratio knob will move freely from neutral to the 3:1 ratio (far left side) and, with the shaft locking pin removed, that the rudder shaft is free to rotate.
	www.hydrovane.com /Instructions.html (6680 words)

	Wind Vane (via CobWeb/3.1 planetlab2.isi.jhu.edu) (Site not responding. Last check: 2007-10-10)
		A weather vane is also called a wind vane.
		A weather vane is a tool used to tell which direction the wind is coming from.
		The breeze turns the arrow on the weather vane until it catches both sides of the wide equally.
	sln.fi.edu.cob-web.org:8888 /tfi/units/energy/vane.html (520 words)

	The Weather Doctor Almanac 2001
		The next written record of wind vanes can be found in the Chinese writings of about the 2nd Century BCE where reference is made to threads or streamers used to indicate the direction, and likely strength of the wind.
		The wind vane, in contrast to the wind-banner style of wind indicator, consists of an asymmetrically shaped object, such as an arrow or rooster, mounted at its center of gravity so it can pivot freely about a vertical axis.
		While many wind vanes, or weathervanes, were erected for practical use, from the early 1800s to the present, their placement on private and public buildings again became an expression of local art.
	www.islandnet.com /~see/weather/almanac/arc2001/alm01mar.htm (2251 words)

	Wind Vane (Site not responding. Last check: 2007-10-10)
		The wind vane is an instrument used to measure the wind direction.
		The tail points where the wind is going and the nose (smallest area) points where the wind is coming from.
		It is used together with a wind vane.
	www.up.ac.za /academic/geog/community/vane.htm (312 words)

	Wind (Site not responding. Last check: 2007-10-10)
		Wind direction is measured by a wind vane which is an arrow mounted on top of an elevated site.
		Wind speed or velocity is measured with either an anemometer or radar.
		On this scale winds are ranked from the calmest air movement at 0 to hurricane winds at 12.
	www.mcwdn.org /WEATHER/Wind.html (246 words)

	Sonic Anemometer and Wind Vane (Site not responding. Last check: 2007-10-10)
		A discussion of determining wind speed and direction by measuring differences in the atmospheric speed of sound.
		The maximum sample rate is a function of the speed of sound divided by the distance D. For D in meters, it is approximately 340 / D at sea level.
		The lowest sound source frequency is in part determined by the distance from the sound source to the pickup sensors (D) and the highest wind speed to be measured.
	a-tech.net /Ideas/SonicAnemometer.htm (470 words)

	WIND-VANE
		Wind vanes have been used to measure wind direction for hundreds of years and they are often decorative- a farmer might have a cow on a wind vane, while a fisherman might have a lobster on his.
		The students will make wind vanes and decorate them with symbols that represent their interests.
		The students will predict which way the wind is blowing by looking at the direction the arrow of their wind vane is pointing.
	www.atlantapuppet.com /wind-van.htm (348 words)

	USATODAY.com (Site not responding. Last check: 2007-10-10)
		Both the wind vane and the cup anemometer are mounted on vertical poles that rotate.
		For example, a wind vane and anemometer duo placed in an alley in New York City may measure a north wind at 20 mph, but 20 feet down the street, the wind may be from the south at 5 mph.
		Wind directions are always reported as the direction winds are coming from.
	www.usatoday.com /weather/wanemom.htm (213 words)

	Wind - DAN'S WILD WILD WEATHER PAGE
		In the course of a year, the average wind speed and wind direction in our area is 8 MPH from the southeast.
		A North wind is a wind that is blowing from the north.
		These are winds that steer the huge masses of warm and cold air generally from west to east across the country.
	www.wildwildweather.com /wind.htm (448 words)

	Wind Speed Measurement: Anemometers
		The measurement of wind speeds is usually done using a cup anemometer, such as the one in the picture to the left.
		Hot wire anemometers detect the wind speed through minute temperature differences between wires placed in the wind and in the wind shade (the lee side).
		If you are planning to build a wind farm it may be an economic disaster if you have an anemometer which measures wind speeds with a 10% error.
	www.windpower.org /en/tour/wres/wndspeed.htm (454 words)

	Self Steer — Hydrovane Wind Vane Steering
		The axis is at the point of linkage that connects the vane to the steering mechanism.
		Vane Angle Settings to Control Sensitivity - If the Hydrovane is responding too slowly, under steering, then finally catching up by over steering, you may raise the vane — make it more responsive/sensitive/powerful by putting it in the vertical position.
		In heavy weather, when the vane axis will be declined for stability the ratio knob can be moved to the right to give more rudder control from a smaller vane movement.
	www.hydrovane.com /OurProduct.html (3027 words)

	Wind Vane (Site not responding. Last check: 2007-10-10)
		A wind vane is an instrument that indicates the direction of the wind.
		One end of the wind vane is larger than the other so when the wind strikes it, the large end is pushed away.
		A wind is named by the direction from which it comes.
	cse.cosm.sc.edu /erth_sci/Atmos/WindVane.htm (89 words)

	Weather vane Summary
		The wind vane, or weather vane, is the simplest and oldest of weather instruments.
		Also modern wind vanes are mounted with an anemometer, a device that measures wind speed.
		Another wind direction device is the windsock used at airports to show wind direction and strength.
	www.bookrags.com /Weather_vane (692 words)

	wind vane - SailNet Community (Site not responding. Last check: 2007-10-10)
		I saw a wind vane for a dinghy at West Marine.
		A wind vane will tell you what point of sail you are on so you can make the best of your sail trim.
		It is important to know where the apparent wind is coming from, because it is the apparent wind that your sails are using to move the boat.
	www.sailnet.com /forums/learning-sail/10334-wind-vane.html (944 words)

	Weathervane
		When wind rotates the shaft and the magnet swings over 1 of 8 switches placed on points of the compass, a LED mounted in a small box inside my house lights up and tells me which way the wind is blowing.
		The wind vane was then place over the cap and the two were bolted together.
		The wind vane itself is made from a lightweight sheet of plastic (looks like cardboard) and aluminum pipe sealed shut at both ends.
	www.geocities.com /weathermake2000/Weathervane.html (2889 words)

	Aries (via CobWeb/3.1 planetlab2.isi.jhu.edu) (Site not responding. Last check: 2007-10-10)
		It works on the servo pendulum system in which the vane operates a servo rudder which can swing sideways.
		This motion is transmitted to the tiller or wheel by ropes and blocks.
		The gear is suitable for all yachts up to 55 ft. L.O.A. The minimum size vessel is usually around 28 ft. L.O.A. because the gear weight of 35 kg is unacceptable on smaller boats unless they have broad stern sections.
	www.selfsteer.dk.cob-web.org:8888 (90 words)

	Wind Vane
		The shape of the vane is not as important as the weight of it.
		When a big wave breaks over the vane gear, the vane will break no matter what it is made of.
		I have never had the vane broken by the force of the wind.
	www.selfsteer.dk /html/wind_vane.html (207 words)

	Miami Museum of Science-Wind Streamer
		The wind streamer makes it possible to tell which direction the wind is blowing.
		The direction of the wind is determined by which way the crepe paper blows.
		Use your new wind streamer to determine in which direction the wind is blowing.
	www.miamisci.org /hurricane/windstreamer.html (277 words)

	Wind Vane (Site not responding. Last check: 2007-10-10)
		Wind vane is a tool to tell us which way the wind is blowing.
		You can often see wind vanes on the top of barns or at airports.
		Sometimes the wind vane is combined with an anemometer, so that you can measure both the wind speed and the wind direction.
	www.oznet.ksu.edu /wdl/climate/kids/wind1.asp (50 words)

	OLogy
		No matter where it happens, wind is caused by changes in temperature and air pressure.
		One tool they use for measuring wind direction is a wind vane.
		It spins and points in the direction from which the wind is blowing.
	ology.amnh.org /earth/stufftodo/weather_wind.html (459 words)

	BBC - Wear Weather - Build your own weather station - Wind vane
		Let's complete our homemade weather station with a wind vane which will indicate which way the wind is blowing.
		Now your new wind vane won't tell you how strong the wind is, but it will tell you which direction it's blowing from.
		The arrow head will point to the direction of the wind, so if the arrow is pointing to the west, then the wind is blowing from the west.
	www.bbc.co.uk /wear/weather/wind_vane.shtml (498 words)

	Wind Vane Winter 2002 (Site not responding. Last check: 2007-10-10)
		The wind energy stakeholders met on April 19 in Jamestown to hear reports from the five committees and to further discuss 2005 wind energy legislation ideas.
		Wind electricity generated at very favorable locations in large wind farms is economical today.
		In the examples we have studied, wind capacity credits could amount to $2 to $3 a MWh, which is a significant portion of the gap between the price in a PPA and the cost of wind energy (the difference being made up today by tax credits).
	www.ndseed.org /htmls/windvaneSpring2004.html (1633 words)

	Make and Use a Wind Vane to determine Wind Direction (Site not responding. Last check: 2007-10-10)
		A wind vane, also called a weather vane, is a tool for measuring wind direction and was probably one of the first weather instruments ever used.
		To determine wind direction, a wind vane spins and points in the direction from which the wind is coming and generally has two parts, or ends: one that is usually shaped like an arrow and turns into the wind and one end that is wider so that it catches the breeze.
		Therefore a west wind is blowing from the west.
	www.k12science.org /curriculum/weatherproj2/en/docs/windvane.shtml (436 words)

	A.J.'s Summer School: Wind Vane - News - MSNBC.com
		Wind vanes are found on top of buildings such as homes, barns, parking garages, and at the airport weather stations, we even have one on the First Warning Weather van.
		Many times on farms you will see a wind vanes attached to the top of a barn in the shape of a farm animal, usually a rooster.
		When the wind catches both sides of the arrow equally, the arrow stops moving and the true wind direction is found.
	www.msnbc.msn.com /id/5481456 (425 words)

	Franklin's Forecast - Weather Vane
		Attach the weather vane to the long wooden dowel by placing the metal washer on the end of the dowel and then hammering the nail through the wooden stick and into the wooden dowel.
		Now you are ready to mount your weather vane outside.
		The head of the pointer will always point to the direction from which the wind is blowing.
	sln.fi.edu /weather/todo/vane.html (327 words)

	Wind vane INV-00A for wind turbines (Site not responding. Last check: 2007-10-10)
		The Wind Vane is made of brass, and is therefore very impervious to weather.
		The Wind Vane can be configured to individual specifications.
		It is possible to replace the sensors and heating units externally, without disassembling the Wind Vane.
	www.dwc-el.dk /wind-vane.asp (121 words)

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